Abstract: Professor Wang Shouchuan believed that the pestilence theory of epidemic febrile diseases could be applied as the guideline to understand the etiology and pathogenesis of children's influenza. He proposed that children's influenza should be divided into three types according to syndrome differentiation: wind pestilence attacking exterior syndrome， pestilence-toxin obstructing lung syndrome， and toxin attacking lung and stomach syndrome， with the method of clearing pestilence and resolving toxin as the main treatment， combined with clearing exterior syndrome and clearing heat， dispersing lung and relieving cough， clearing stomach and stopping vomiting， and treated with Qingwen Jiebiao Decoction， Qingwen Xuanfei Decoction and Qingwen Anwei Decoction， respectively， and 65 children were clinically observed and achieved good results.